<?php

namespace Xin\Lock;

class LuaScripts
{

	/**
	 * Get the Lua script to atomically release a lock.
	 * KEYS[1] - The name of the lock
	 * ARGV[1] - The owner key of the lock instance trying to release it
	 *
	 * @return string
	 */
	public static function releaseLock()
	{
		return <<<'LUA'
if redis.call("get",KEYS[1]) == ARGV[1] then
    return redis.call("del",KEYS[1])
else
    return 0
end
LUA;
	}

}
